private void GetRecoveryInfoFromLatestCheckpoints(out HybridLogCheckpointInfo recoveredHLCInfo, out IndexCheckpointInfo recoveredICInfo)
{
Debug.WriteLine("********* Primary Recovery Information ********");
recoveredHLCInfo = default;
foreach (var hybridLogToken in checkpointManager.GetLogCheckpointTokens())
{
try
{
recoveredHLCInfo = new HybridLogCheckpointInfo();
recoveredHLCInfo.Recover(hybridLogToken, checkpointManager, hlog.LogPageSizeBits);
}
catch
{
continue;
}
Debug.WriteLine("HybridLog Checkpoint: {0}", hybridLogToken);
break;
}
if (recoveredHLCInfo.IsDefault())
{
throw new FasterException("Unable to find valid index token");
}
recoveredHLCInfo.info.DebugPrint();
recoveredICInfo = default;
foreach (var indexToken in checkpointManager.GetIndexCheckpointTokens())
{
try
{
// Recovery appropriate context information
recoveredICInfo = new IndexCheckpointInfo();
recoveredICInfo.Recover(indexToken, checkpointManager);
}
catch
{
continue;
}
if (!IsCompatible(recoveredICInfo.info, recoveredHLCInfo.info))
{
recoveredICInfo = default;
continue;
}
Debug.WriteLine("Index Checkpoint: {0}", indexToken);
recoveredICInfo.info.DebugPrint();
break;
}
if (recoveredICInfo.IsDefault())
{
Debug.WriteLine("No index checkpoint found, recovering from beginning of log");
}
}
private void InternalRecoverFromLatestCheckpoints(int numPagesToPreload, bool undoFutureVersions)
{
Debug.WriteLine("********* Primary Recovery Information ********");
HybridLogCheckpointInfo recoveredHLCInfo = default;
foreach (var hybridLogToken in checkpointManager.GetLogCheckpointTokens())
{
try
{
recoveredHLCInfo = new HybridLogCheckpointInfo();
recoveredHLCInfo.Recover(hybridLogToken, checkpointManager);
}
catch
{
continue;
}
Debug.WriteLine("HybridLog Checkpoint: {0}", hybridLogToken);
break;
}
if (recoveredHLCInfo.IsDefault())
{
throw new FasterException("Unable to find valid index token");
}
recoveredHLCInfo.info.DebugPrint();
IndexCheckpointInfo recoveredICInfo = default;
foreach (var indexToken in checkpointManager.GetIndexCheckpointTokens())
{
try
{
// Recovery appropriate context information
recoveredICInfo = new IndexCheckpointInfo();
recoveredICInfo.Recover(indexToken, checkpointManager);
}
catch
{
continue;
}
if (!IsCompatible(recoveredICInfo.info, recoveredHLCInfo.info))
{
recoveredICInfo = default;
continue;
}
Debug.WriteLine("Index Checkpoint: {0}", indexToken);
recoveredICInfo.info.DebugPrint();
break;
}
if (recoveredICInfo.IsDefault())
{
Debug.WriteLine("No index checkpoint found, recovering from beginning of log");
}
InternalRecover(recoveredICInfo, recoveredHLCInfo, numPagesToPreload, undoFutureVersions);
}